# Fast GST Refund

> Prepare Indian GST refund records, validate entries and generate Statement 3 and Annexure B JSON.

- name: com.fastgstrefund/fast-gst-refund
- version: 1.3.1
- connection class: R0 (autonomous)
- trust: 95/100
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.fastgstrefund%2Ffast-gst-refund
- tools: https://api.protogrid.dev/v1/servers/com.fastgstrefund%2Ffast-gst-refund/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "fast-gst-refund": {
      "type": "http",
      "url": "https://fastgstrefund.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 100
- provenance: 85
- drivers: +repository +dns-namespace +website +reachable +uptime-97% +updated-13d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 11 of 11 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 2,548 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 25 (weight 15)

- warn `stability.changes`: 22 tool changes in 30 days
- fail `stability.rug_pull`: 5 tools kept their name but changed most of their description in 30 days; review before trusting them

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 11, about 2,548 tokens to load them all
- tool set hash: 65cefc92ba4cc0ebfdc146ae02eac256
- tools last changed: 2026-10-07T04:11:14.988Z
- badge: [![protogrid quality](https://protogrid.dev/badge/com.fastgstrefund/fast-gst-refund.svg)](https://protogrid.dev/servers/com.fastgstrefund/fast-gst-refund)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-07 `generate_annexure_b` changed (description, inputSchema, outputSchema, annotations)
  - before: Create the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01): the file the GST portal otherwise requires from its Excel offline utility. action=requirements returns the fields and sources: purchase documents, tax amounts, the GSTR-2B period, reviewed ITC eligibility and the eight GSTR-3B reversal totals, with the fields each supply type leaves empty. action=validate is free, needs no sign-in, applies the utility's own checks and returns every error at once. action=generate returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and period, and download. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them. A file made by the official utility can be passed as data unchanged.
  - after: Creates the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_annexure_b. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.
- 2026-10-07 `validate_annexure_b` added
  - Checks records for the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.
- 2026-10-07 `get_annexure_b_requirements` added
  - Returns the fields of the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: purchase documents, tax amounts, the GSTR-2B period, reviewed ITC eligibility and the eight GSTR-3B reversal totals, with the fields each supply type leaves empty. Takes no input. Use it before validate_annexure_b to learn which fields to collect.
- 2026-10-07 `generate_statement3` changed (description, inputSchema, outputSchema, annotations) **meaning changed**
  - before: Create the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01): the file the GST portal otherwise requires from its Excel offline utility. action=requirements returns the fields and where each value comes from: export invoices and notes, bank BRC/FIRC rows, and shipping details for goods. action=validate is free, needs no sign-in, applies the utility's own checks and returns every error at once. action=generate returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and period, and download. A file made by the official utility can be passed as data unchanged. The tool takes no GST portal password or OTP.
  - after: Creates the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_statement3. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP.
- 2026-10-07 `validate_statement3` added
  - Checks records for the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged.
- 2026-10-07 `get_statement3_requirements` added
  - Returns the fields of the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: export invoices and notes, bank BRC/FIRC rows, and shipping details for goods. Takes no input. Use it before validate_statement3 to learn which fields to collect.
- 2026-10-07 `check_receipt_allocation` changed (description, outputSchema)
  - before: Check arithmetic, duplicate allocations, missing row references, overallocated receipts and invoice balances. Send anonymous row numbers and integer INR paise; keep names, GSTINs and certificate numbers local. Up to 200 invoices, 200 receipts and 1000 allocations.
  - after: Checks how bank receipts are allocated to export invoices: arithmetic, duplicate allocations, missing row references, overallocated receipts and invoice balances. Takes anonymous row numbers and integer INR paise only; names, GSTINs and certificate numbers are not needed. Up to 200 invoices, 200 receipts and 1000 allocations.
- 2026-10-07 `explain_upload_error` changed (description, outputSchema)
  - before: Get documented checks and correction steps. Statement 3 issues: json_generation, receipt_allocation, corrected_retry, return_mismatch. Annexure B: duplicate_document, gstr2b_mismatch, reversals, json_generation.
  - after: Returns the documented checks and correction steps for one known problem with a Statement 3 or Annexure B file. Statement 3 issues: json_generation, receipt_allocation, corrected_retry, return_mismatch. Annexure B issues: duplicate_document, gstr2b_mismatch, reversals, json_generation.
- 2026-10-07 `read_refund_guide` changed (description, outputSchema)
  - before: Retrieve a public guide using a slug from search_refund_guides. Returns Markdown with source links and the recorded source-check date.
  - after: Returns one public guide as Markdown, with its source links and the date its sources were checked. Takes a slug from search_refund_guides.
- 2026-10-07 `search_refund_guides` changed (description, outputSchema) **meaning changed**
  - before: Find public guidance by preparation topic. Use general keywords only, without taxpayer identifiers or document contents.
  - after: Finds Fast GST Refund's public guides by preparation topic and returns their slugs, titles and descriptions. Takes general keywords; it does not need taxpayer identifiers or document contents.

Full history: https://api.protogrid.dev/v1/servers/com.fastgstrefund%2Ffast-gst-refund/changes

## Remotes

- https://fastgstrefund.com/mcp (streamable-http, auth none, reachable true, uptime30d 0.9714286)

## Packages

_none_

## Tools (11)

- `check_receipt_allocation`: Checks how bank receipts are allocated to export invoices: arithmetic, duplicate allocations, missing row references, overallocated receipts and invoice balances. Takes anonymous row numbers and integer INR paise only; names, GSTINs and certificate numbers are not needed. Up to 200 invoices, 200 receipts and 1000 allocations.
- `explain_upload_error`: Returns the documented checks and correction steps for one known problem with a Statement 3 or Annexure B file. Statement 3 issues: json_generation, receipt_allocation, corrected_retry, return_mismatch. Annexure B issues: duplicate_document, gstr2b_mismatch, reversals, json_generation.
- `generate_annexure_b`: Creates the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_annexure_b. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.
- `generate_statement3`: Creates the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, from records that pass validate_statement3. Returns openUrl, a link the user opens in a browser to sign in by email, pay once per GSTIN and refund period, and download; the checked records are stored behind the link for 24 hours. With a connected account that has paid, it returns the file. The tool takes no GST portal password or OTP.
- `get_annexure_b_requirements`: Returns the fields of the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: purchase documents, tax amounts, the GSTR-2B period, reviewed ITC eligibility and the eight GSTR-3B reversal totals, with the fields each supply type leaves empty. Takes no input. Use it before validate_annexure_b to learn which fields to collect.
- `get_refund_checklist`: Returns the records to gather, the checks to make, the next step and the relevant guides for one stage of a service-export GST refund claim and one preparation topic. Use it when someone asks what to prepare or check.
- `get_statement3_requirements`: Returns the fields of the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility, and where each value comes from: export invoices and notes, bank BRC/FIRC rows, and shipping details for goods. Takes no input. Use it before validate_statement3 to learn which fields to collect.
- `read_refund_guide`: Returns one public guide as Markdown, with its source links and the date its sources were checked. Takes a slug from search_refund_guides.
- `search_refund_guides`: Finds Fast GST Refund's public guides by preparation topic and returns their slugs, titles and descriptions. Takes general keywords; it does not need taxpayer identifiers or document contents.
- `validate_annexure_b`: Checks records for the Annexure B JSON (statement of inward-supply invoices) for a GST refund of accumulated ITC (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged. ITC eligibility, reversal amounts and GSTR-2B periods come from the taxpayer's reviewed records; the tool does not infer them.
- `validate_statement3`: Checks records for the Statement 3 JSON for a GST refund of accumulated ITC on exports without payment of tax (RFD-01), the file the GST portal otherwise requires from its Excel offline utility. Applies the offline utility's own checks and returns every error and warning at once, with its row and field. Free; needs no sign-in; stores nothing. A file made by the official utility can be passed as data unchanged.